My family name

I recently changed my name from Jacobs back to our original family name of La Eace. Our ancestors who arrived from Lebanon and settled in OHIO changed their name to Jacobs somewhere along the line. I am trying to find out any information I can about this name. I believe they were from a town called Romana or something like thatup in theMountains. If you have any information on where might be a good place to track this type of infodown, let me know. Thanks.